Finding the Third Proportional to 1,385,280 and 2,072,344

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385,280 : 2,072,344 = 2,072,344 : x
2. Step 2: Convert to fraction form
   1,385,280/2,072,344 = 2,072,344/x
3. Step 3: Cross multiply
   1,385,280x = 2,072,344 × 2,072,344
4. Step 4: Simplify right side
   1,385,280x = 4,294,609,654,336
5. Step 5: Solve for x
   x = 4,294,609,654,336/1,385,280
6. Step 6: Final answer
   x = 3,100,174.44